Today I focused on React performance optimization and started working with React.memo, useMemo, and useCallback inside my WorldWise project.
Instead of learning these concepts through small examples, I applied them inside a real application. This helped me understand when optimization is actually needed and how React rendering works in practice.
I learned that React.memo helps prevent unnecessary component re-renders when props don’t change. This made me realize how React can sometimes re-render components even when nothing important has changed.
I also practiced useCallback, which helps keep function references stable. This is important when passing functions between components because changing function references can trigger extra renders.
Another important part of today's learning was using the React DevTools Profiler. I started analyzing which components re-render and how optimization affects performance. I am still not fully comfortable with the Profiler yet, but I understand how it helps detect performance problems.
I wouldn't say I have mastered these concepts yet, but now I clearly understand how React performance optimization works and why it matters in real applications.
The next step is more practice so these optimization patterns become natural while building real projects.
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